/*
 * (C) Copyright 2015-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *   ohun@live.cn (夜色)
 */

package com.mpush.common.message.gateway;

import com.google.gson.reflect.TypeToken;
import com.mpush.api.connection.Connection;
import com.mpush.api.protocol.Packet;
import com.mpush.common.message.ByteBufMessage;
import com.mpush.tools.Jsons;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelFutureListener;

import java.util.Set;

import static com.mpush.api.protocol.Command.GATEWAY_PUSH;

/**
 * Created by ohun on 2015/12/30.
 *
 * @author ohun@live.cn
 */
public class GatewayPushMessage extends ByteBufMessage {
    public String userId;
    public Set<String> tags;
    public int clientType;
    public int timeout;
    public byte[] content;

    public GatewayPushMessage(String userId, byte[] content, Connection connection) {
        super(new Packet(GATEWAY_PUSH, genSessionId()), connection);
        this.userId = userId;
        this.content = content;
    }

    public GatewayPushMessage(Packet message, Connection connection) {
        super(message, connection);
    }

    @Override
    public void decode(ByteBuf body) {
        userId = decodeString(body);
        tags = decodeSet(body);
        clientType = decodeInt(body);
        timeout = decodeInt(body);
        content = decodeBytes(body);
    }

    @Override
    public void encode(ByteBuf body) {
        encodeString(body, userId);
        encodeSet(body, tags);
        encodeInt(body, clientType);
        encodeInt(body, timeout);
        encodeBytes(body, content);
    }

    private Set<String> decodeSet(ByteBuf body) {
        String json = decodeString(body);
        if (json == null) return null;
        return Jsons.fromJson(json, new TypeToken<Set<String>>() {
        }.getType());
    }

    private void encodeSet(ByteBuf body, Set<String> field) {
        String json = field == null ? null : Jsons.toJson(field);
        encodeString(body, json);
    }

    public GatewayPushMessage setClientType(int clientType) {
        this.clientType = clientType;
        return this;
    }

    public GatewayPushMessage addFlag(byte flag) {
        packet.addFlag(flag);
        return this;
    }

    public GatewayPushMessage setTimeout(int timeout) {
        this.timeout = timeout;
        return this;
    }

    public boolean isBroadcast() {
        return userId == null;
    }

    public boolean needAck() {
        return packet.hasFlag(Packet.FLAG_BIZ_ACK) || packet.hasFlag(Packet.FLAG_AUTO_ACK);
    }

    @Override
    public void send() {
        super.sendRaw();
    }

    @Override
    public void send(ChannelFutureListener listener) {
        super.sendRaw(listener);
    }

    @Override
    public String toString() {
        return "GatewayPushMessage{" +
                "userId='" + userId + '\'' +
                ", clientType='" + clientType + '\'' +
                ", timeout='" + timeout + '\'' +
                ", content='" + content.length + '\'' +
                '}';
    }
}
